RFR: 8309937: Add @sealedGraph for some Panama FFM interfaces

Fri Jun 16 11:35:58 UTC 2023

On Tue, 13 Jun 2023 14:13:42 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> This PR proposes adding `@sealedGraph` to `GroupLayout` so the latter will be rendered in the javadocs the same way the other layouts that has public sub-interfaces.

Marked as reviewed by mcimadamore (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/14449#pullrequestreview-1483265666